/*
 * Copyright (c) 1997, 1998, 2003, 2006 Aleksandar Samardzic
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef BOUNDING_VOLUME_H
#define BOUNDING_VOLUME_H

#include "common.h"
#include "slabs.h"

/* NOTE: value bellow is tolerance used to avoid reintersection of a ray
 * with an object */
#define EPSILON     0.0001

/* BoundingVolume class */
typedef struct _PBoundingVolume {
	Byte            numSlabs;
	double          (*d)[2];
	struct _PPrimitive *pPrimitive;
	double          area,
	                cost;
} PBoundingVolume;

/* BoundingVolume class public operations */
void            BoundingVolume_Init(PBoundingVolume *, PSlabs *);
void            BoundingVolume_Clean(PBoundingVolume *);
double          BoundingVolume_Intersect(PBoundingVolume *, double *,
					 double *);
void            BoundingVolume_Combine(PBoundingVolume *,
				       PBoundingVolume *,
				       PBoundingVolume *);
void            BoundingVolume_CalcArea(PBoundingVolume *);

#endif
